Backend Developer
- Location
- Kazakhstan
- Rate, USD
- Not specified
- Work schedule
- Full Time,
- Links
- —
- Language skills
- English, Russian, Turkish
- Available for Hire
- Yes
About me
I am a backend developer with over 5 years of experience building high-load systems and scalable architecture, primarily with PHP. I focus on improving backend performance, reliability, and maintainability, and I enjoy working on services that need to handle demanding traffic and complex business logic.
My background includes extensive work with Laravel, Node.js, Redis, SQL optimization, PostgreSQL, Oracle, and microservices architecture. I have contributed to payment gateways, wallet systems, university automation platforms, and internal infrastructure tools, often taking responsibility for both development and performance tuning.
I have also worked in leadership roles, including Team Lead and Lead Backend Developer positions, where I managed developers, reviewed code, planned architecture, and helped guide backend strategy. I am comfortable working in collaborative environments and aligning technical decisions with product and operational needs.
A major part of my experience has been improving system performance and scalability. I have optimized databases, reduced load through caching, introduced better architectural patterns such as Domain Driven Design, and supported CI/CD and containerized deployment workflows.
I have experience integrating third-party services and APIs, including payment providers, banking systems, Moodle, Google services, Bitrix24, and 1C. I also have hands-on experience with Docker, Docker Swarm, Portainer, AWS services, SQS, ECS, and Lambda.
I value clean architecture, practical engineering, and continuous improvement. I am motivated by building dependable backend systems that support real users and business growth, while also helping teams work more effectively.
Professional area
Education
- May 2021 Bachelor of Computer Science @ Suleyman Demirel University
Engineering and Natural Science Faculty. Tutoring for junior courses, extra classes, social activities, internship in IT department, mentoring, teaching Java programming language, and creating/evaluating homework and final exams.
Experience
- Dec 2025 - Present Full Stack Developer @ HJ Platform
Developed a backend service for a fitness platform using Node.js and Express.js. Decomposed a monolith into microservices with NestJS, PostgreSQL, and Prisma. Wrote data migration scripts from MongoDB to PostgreSQL, integrated SQS queues, and worked with Amazon ECS and AWS Lambda.
- Dec 2024 - Dec 2025 Lead Backend Developer @ MaxPay
Developed and supported a payment gateway and wallet implementation. Built new functionality on Laravel 10 and Node.js + Express, optimized settlement systems, integrated payment providers and banking APIs, designed PostgreSQL structures, wrote complex SQL queries, improved performance, and set up CI/CD processes.
- Apr 2024 - Jun 2024 Team Lead @ Ozimiz IT holding
Managed and led 3+ developers, performed code reviews and performance reviews, built an architectural roadmap, and led backend development for PHP-based high-load services. Integrated Redis caching, applied Domain Driven Design, worked with Docker and Docker Swarm, used Portainer, and integrated Bitrix24, 1C, FreedomPay, and CloudPayments.
- Dec 2023 - Dec 2024 Back-End Team Lead of Automation Department @ SDU University
Developed systems for teachers and administrative staff, improved university workflows, optimized Oracle database performance using Redis and SQL tuning, applied Domain Driven Design, reduced database load, improved team productivity, and integrated GrayLog, Moodle, and Google Schedule.
- Mar 2022 - Dec 2023 Middle Back-End Developer of Automation Department @ SDU University
Developed backend functionality, rewrote services with a new architecture, worked in a team of 10+ members, improved database performance through SQL optimization, implemented Domain Driven Design, and handled high traffic systems.
- May 2020 - Mar 2022 Back-End Developer of Automation Department @ SDU University
Developed backend functionality, rewrote services with a new architecture, worked in a team of 10+ members, and implemented Domain Driven Design principles while building new services.
- Mar 2020 - May 2020 Intern Back-End Developer of Automation Department @ SDU University
Worked as part of the backend team developing software for students and created a new version of student software in Laravel.
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